block: add zone open, close and finish ioctl support
Introduce three new ioctl commands BLKOPENZONE, BLKCLOSEZONE and
BLKFINISHZONE to allow applications to control the condition of zones
on a zoned block device through the execution of the REQ_OP_ZONE_OPEN,
REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH operations.
Contains contributions from Matias Bjorling, Hans Holmberg,
Dmitry Fomichev, Keith Busch, Damien Le Moal and Christoph Hellwig.
Reviewed-by: Javier González <javier@javigon.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com>
Signed-off-by: Matias Bjorling <matias.bjorling@wdc.com>
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index dab34dc..481eaf7 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -357,15 +357,16 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
}
/*
- * BLKRESETZONE ioctl processing.
+ * BLKRESETZONE, BLKOPENZONE, BLKCLOSEZONE and BLKFINISHZONE ioctl processing.
* Called from blkdev_ioctl.
*/
-int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
+int blkdev_zone_mgmt_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
struct request_queue *q;
struct blk_zone_range zrange;
+ enum req_opf op;
if (!argp)
return -EINVAL;
@@ -386,8 +387,25 @@ int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
if (copy_from_user(&zrange, argp, sizeof(struct blk_zone_range)))
return -EFAULT;
- return blkdev_zone_mgmt(bdev, REQ_OP_ZONE_RESET,
- zrange.sector, zrange.nr_sectors, GFP_KERNEL);
+ switch (cmd) {
+ case BLKRESETZONE:
+ op = REQ_OP_ZONE_RESET;
+ break;
+ case BLKOPENZONE:
+ op = REQ_OP_ZONE_OPEN;
+ break;
+ case BLKCLOSEZONE:
+ op = REQ_OP_ZONE_CLOSE;
+ break;
+ case BLKFINISHZONE:
+ op = REQ_OP_ZONE_FINISH;
+ break;
+ default:
+ return -ENOTTY;
+ }
+
+ return blkdev_zone_mgmt(bdev, op, zrange.sector, zrange.nr_sectors,
+ GFP_KERNEL);
}
static inline unsigned long *blk_alloc_zone_bitmap(int node,
